KR940027562A - Digital transmission system for digital signal transmission, transmitter and receiver for digital transmission system, and digital transmission method - Google Patents

Digital transmission system for digital signal transmission, transmitter and receiver for digital transmission system, and digital transmission method Download PDF

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Publication number
KR940027562A
KR940027562A KR1019940009975A KR19940009975A KR940027562A KR 940027562 A KR940027562 A KR 940027562A KR 1019940009975 A KR1019940009975 A KR 1019940009975A KR 19940009975 A KR19940009975 A KR 19940009975A KR 940027562 A KR940027562 A KR 940027562A
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signal
data portions
digital
data
transmission system
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KR1019940009975A
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Korean (ko)
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알랜 브라이언 데이비드
엔. 헐리얼컬 사미르
바실리 카를로
구안 지완
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프레데릭 얀 스미트
필립스 일렉트로닉스 엔.브이.
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Publication of KR940027562A publication Critical patent/KR940027562A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/0803—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division using frequency interleaving, e.g. with precision offset
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0098—Unequal error protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/043—Pseudo-noise [PN] codes variable during transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Details Of Television Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

단일 QAM(quadrature amplitude modulated) 반송파를 사용하여 디지털 텔레비전 신호를 전송하는 방법 및 장치들로서 단일 QAM 반송파는 각각의 복소 신호 데이터 속도 레벨에서 음성 및 영상 패킷들을 제공한다. 본 발명의 한가지 목적은 종래의 아날로그 텔레비전(즉, NTSC) 시스템 통신로에 의해 보여진 영상에 대한 음성의 수신 특성을 닮은 디지털 텔레비전 신호를 제공하는 것이다.As a method and apparatus for transmitting digital television signals using a single quadrature amplitude modulated (QAM) carrier, a single QAM carrier provides audio and video packets at respective complex signal data rate levels. One object of the present invention is to provide a digital television signal that resembles the reception characteristics of audio for an image viewed by a conventional analog television (ie NTSC) system communication channel.

Description

디지털 신호 송신용 디지털 송신 시스템과 디지털 송신 시스템용 송신기와 수신기 및, 디지털 송신방법Digital transmission system for digital signal transmission, transmitter and receiver for digital transmission system, and digital transmission method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따라 포맷화(fomatted)된 데이터 스트림(stream) 도시도, 제2도는 본 발명을 통합한 송신기의 블럭도, 제3도는 16QAM(quadrature amplitude modulation)용 16점 복소 신호 배치를 나타내는 도시도, 제4도는 32QAM용 복소 신호 배치를 나타내는 도시도, 제5도는 본 발명을 통합한 수신기의 블럭도1 is a diagram illustrating a data stream formatted according to the present invention, FIG. 2 is a block diagram of a transmitter incorporating the present invention, and FIG. 3 is a 16-point complex signal configuration for 16QAM (quadrature amplitude modulation). 4 is a diagram showing a complex signal arrangement for 32QAM, and FIG. 5 is a block diagram of a receiver incorporating the present invention.

Claims (10)

제1정보원으로부터 다수의 제1데이터 부분들을 형성하는 수단 및 제1신호 배치를 사용하여 상기 제1데이터 부분들을 변조하는 수단 및 제2정보원으로부터 다수의 제2데이터 부분들을 형성하는 수단 및 제2배치를 사용하여 상기 제2데이터 부분들을 변조하는 수단을 구비한 송신기 및 : 상기 디지털 신호를 수신하는 수단과, 제1신호 배치의 복조에 의해 다수의 제1데이터 부분들을 유도하는 수단 및, 제2신호 배치의 복조에 의해 다수의 제2데이타 부분들을 유도하는 수단을 구비한 수신기를 포함하는 디지털 신호를 송신하는 디지털 송신 시스템에 있어서, 상기 송신기가 제3신호 배치를 사용하여 제1 및 제2데이터 부분의 수신을 돕기 위해 사용되어질 트레이닝 데이터 부분을 변조하는 수단을 더 포함하고, 상기 수신기가 제3신호 배치의 복조에 의해 제1 및 제2데이터 부분의 수신을 돕기 위해 사용되어질 트레이닝 데이터 부분을 유도하는 수단을 더 포함하는 것을 특징으로 하는 디지털 신호 송신용 디지털 송신 시스템Means for forming a plurality of first data portions from a first information source and means for modulating the first data portions using a first signal arrangement and means for forming a plurality of second data portions from a second information source and a second arrangement A transmitter having means for modulating said second data portions using: means for receiving said digital signal, means for deriving a plurality of first data portions by demodulation of a first signal arrangement, and a second signal; 13. A digital transmission system for transmitting a digital signal comprising a receiver having means for deriving a plurality of second data portions by demodulation of the arrangement, wherein the transmitter uses the third signal arrangement to produce first and second data portions. Means for modulating a portion of the training data to be used to assist in receiving the data, wherein the receiver is configured to demodulate the first signal by demodulation of a third signal configuration. Second digital signal transmission according to claim 1, further comprising means for deriving a training data portion to be used to assist in the reception of the data portion of the digital transmission system credit 제1항에 있어서, 상기 트레이닝 데이터 부분이 트레이닝 순차를 포함하는 것을 특징으로 하는 디지털 신호 송신용 디지털 송신 시스템.2. The digital transmission system of claim 1 wherein the training data portion comprises a training sequence. 제1항 또는 제2항에 있어서, 상기 트레이닝 데이터 부분이 교번 순차를 포함하는 것을 특징으로 하는 디지털 신호 송신용 디지털 송신 시스템.3. A digital transmission system according to any one of the preceding claims, wherein said training data portion comprises alternating sequences. 제1,제2, 또는 제3항에 있어서 상기 트레이닝 데이터 부분이 적어도 제1신호 배치를 식별하는 순차를 포함하는 것을 특징으로 하는 디지털 신호 송신용 디지털 송신 시스템.4. A digital transmission system as claimed in claim 1, 2 or 3 wherein the training data portion comprises at least a sequence identifying the first signal arrangement. 제1 내지 제4 항 중 어느 한 항에 있어서, 제1데이터 부분이 영상 신호를 포함하고 제2데이터 부분이 음성 신호를 포함하는 것을 특징으로 하는 디지털 신호 송신용 디지털 송신 시스템The digital transmission system according to any one of claims 1 to 4, wherein the first data portion includes a video signal and the second data portion includes an audio signal. 제1정보원으로부터 다수의 제1데이터 부분들을 형성하는 수단 및 제1신호 배치를 사용하여 상기 제1데이터 부분들을 변조하는 수단 및, 제2정보원으로부터 다수의 제2데이터 부분들을 형성하는 수단 및 제2신호 배치를 사용하여 상기 제2데이터 부분들을 변조하는 수단을 포함하는 디지털 송신 시스템용 송신기에 있어서, 상기 송신기가 제3배치를 사용하여 제1 및 제2데이터 부분의 수신을 돕기 위해 사용되어질 트레이닝 데이터 부분을 변조하는 수단을 더 포함하는 것을 특징으로 하는 디지털 송신 시스템을 송신기.Means for forming a plurality of first data portions from a first information source and means for modulating the first data portions using a first signal arrangement, means for forming a plurality of second data portions from a second information source and a second A transmitter for a digital transmission system comprising means for modulating the second data portions using signal placement, wherein the transmitter is to be used to assist in receiving the first and second data portions using a third arrangement. And means for modulating the portion. 제6항에 있어서, 상기 트레이닝 데이터 부분이 적어도 제1신호 배치를 식별하는 순차를 포함하는 것을 특징으로 하는 디지털 송신 시스템용 송신기.7. The transmitter of claim 6 wherein the portion of the training data comprises a sequence identifying at least a first signal configuration. 상기 디지털 신호를 수신하는 수단과, 제1신호 배치의 복조에 의해 다수의 제1데이터 부분들을 유도하는 수단 및, 제2신호 배치의 복조에 의해 다수의 제2데이터 부분들을 유도하는 수단을 포함하는 디지털 송신 시스템용 수신기에 있어서, 상기 수신기가 제3신호 배치의 복조에 의해 제1 및 제2데이터 부분들의 수신을 돕기 위해 사용되어질 트레이닝 데이터 부분을 유도하는 수단을 포함하는 것을 특징으로 하는 디지털 송신 시스템용 수신기.Means for receiving the digital signal, means for deriving a plurality of first data portions by demodulation of a first signal arrangement, and means for deriving a plurality of second data portions by demodulation of a second signal arrangement; A receiver for a digital transmission system, the receiver comprising means for deriving a training data portion to be used to assist in receiving the first and second data portions by demodulation of a third signal configuration. Receiver. 제8항에 있어서, 트레이닝 데이터 부분이 적어도 제1신호 배치를 식별하는 순차를 포함하는 것을 특징으로 하는 디지털 송신 시스템용 수신기.9. A receiver as claimed in claim 8, wherein the training data portion comprises a sequence identifying at least a first signal arrangement. 제1정보원으로부터의 다수의 제1데이터 부분들을 형성하는 단계 및 제1신호 배치를 사용하여 상기 제1데이터 부분들을 변조하는 단계와, 제2정보원으로부터 다수의 제2데이터 부분들을 형성하는 단계와 제2신호 배치를 사용하여 상기 제2데이터 부분들을 변조하는 단계를 포함하는 디지털 신호 송신방법에 있어서, 상기 방법이 제3신호 배치를 사용하여 제1 및 제2데이터 부분의 수신을 돕기 위해 사용되어질 트레이닝 데이터 부분을 변조하는 단계를 더 포함하는 것을 특징으로 하는 디지털 신호 송신 방법.Forming a plurality of first data portions from a first information source, modulating the first data portions using a first signal arrangement, forming a plurality of second data portions from a second information source, and A method of transmitting a digital signal comprising modulating the second data portions using a two signal arrangement, wherein the method is trained to be used to assist in receiving the first and second data portions using a third signal arrangement. And modulating the data portion. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019940009975A 1993-05-07 1994-05-07 Digital transmission system for digital signal transmission, transmitter and receiver for digital transmission system, and digital transmission method KR940027562A (en)

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US5561468A (en) 1996-10-01
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